San Francisco is taking moves to protect its dwindling school population.
The speed limit around San Francisco schools will soon drop to 15 miles per hour.
Mayor Ed Lee announced the change on Thursday at the George Peabody Elementary School in the city's Richmond District.
The 15-mile-per-hour speed limit - made possible by recent state legislation - will affect streets within 500 feet of the city's more than 200 public and private schools.
City workers will spend the next year installing 1,000 traffic signs indicating the new speed, which will not go into effect until the signs are up.
The new speed limit will cost $362,000 to implement.
Pedestrian advocates say it will improve safety.